【作者】 雒昆利；

【Author】 Luo Kunli(Xi’an Mining Institute,Xi’an 710054)

【机构】 西安矿业学院；

【摘要】 <正>本文以采自辽宁、山东和江苏等地的寒武系张夏组和崮山组三叶虫动物群,特别是球接子类三叶虫的生物组合面貌、地层层序等为依据,对该区寒武系张夏阶与崮山阶及中、上寒武统的界线进行了讨论。笔者认为我国现行的张夏阶与崮山阶界线,即中、上寒武统界线应重新厘定。本文建议把原张夏阶上部的 Damesella-Yabeia 带与原崮山阶的 Blackwelde- ria 带和 Drepanura 带同归于崮山阶；以 Liopeishania 带与 Damesella-Yabeia 带间的界线或 Tomagnostella sulcifera integera 的顶界作为张夏阶与崮山阶的界线,及我国中、上寒武统的界线。更多还原

【Abstract】 Based on the trilobites faunas,especially on the agnostid assemblages and stratigraph- ic sequences of the Cambrian Zhangxia and Gushan Formations from Liaoning,Jiangsu and other provinces,the boundary of the Cambrian Zhangxia and Kushan Stages,and the boundary of the Middle and Upper Cambrian are discussed.The author considers that the boundary of the Zhangxia and Gushan Stages should be re-defined.It is suggusted in this paper that the Damesella-Yabeia zone of the upper part of the previous Zhangxia Stage,and the Blackwelderia and Drepanura zones of the previous Gushan Stage should all be as- signed to the Gushan Stage;and the boundary of the Zhangxia and Gushan Stages,or the boundary of the Middle and Upper Cambrian should be drawn between the Liopeishania zone and the DameseUa-Yabeia zone,or at the top of the Tomagnostella sulcifera integera zone.更多还原